Ong / Akbarnezhad Microwave-Assisted Concrete Technology

Production, Demolition and Recycling
Erscheinungsjahr 2015
ISBN: 978-1-4665-8394-8
Verlag: Taylor & Francis
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 264 Seiten

Microwave heating is rapidly replacing conventional heating technologies used in many industries including food processing, timber drying, ceramic fabrication and processing, and mining. Similarly, microwave heating has a number of innovative applications in the concrete industry. This reference book deals with the underlying concepts of microwave heating of concrete. It covers the design of industrial microwave heating generators and applicators, as well as various process control techniques to monitor the condition of fresh and hardened concrete during the heating process.

Autoren/Hrsg.

Ong, Gary

Ong, K. C. Gary

Akbarnezhad, Ali

Fachgebiete

• Technische Wissenschaften Bauingenieurwesen Baukonstruktion, Baufachmaterialien

Inhaltsverzeichnis

Introduction

Microwave Heating

Applications of Microwave Heating in Concrete Technology

Fundamentals of Microwave Heating

Electromagnetic Fields

Electromagnetic Properties

Microwave Heating Mechanism

Electromagnetic power transfer

Penetration Depth & Attenuation Factor

Formulation of Microwave Power Dissipation (Dielectric Loss)

Heat Transfer and Temperature Rise in Microwave Heating of Concrete

Mass Transfer Phenomenon and the Pore Pressure Development in Microwave Heated Concrete

Microwave Heating Safety

Summary

Microwave-Assisted Accelerated Curing of Precast Concrete

Background

Hydration of Cement and Strength Development

Curing of Concrete

Accelerated Curing of Precast Concrete

Microwave Curing of Concrete

Summary

Microwave-Assisted Selective Demolition of Concrete

Introduction

Applications of Selective Concrete Removal Techniques

State-of-the-Art Selective Concrete Demolition Techniques

Microwave-Assisted Demolition of Concrete

Configuration of Microwave-Assisted Selective Demolition Tools

Working Principles of Microwave-Assisted Selective Demolition of Concrete

Microwave-Assisted Drilling of Concrete

Summary

Microwave-assisted Concrete Recycling

Introduction

State-of-the-Art Concrete Recycling Technology

Properties of Recycled Concrete Aggregates

Available Standards on RCA

Main Factors Lowering the Quality of RCA

Elimination of Impurities\Contaminants

Removal of the Adhering Mortar

Summary

Process Control in Microwave Heating of Concrete

Introduction

Temperature measurement in microwave heating of concrete

Temperature Monitoring of Microwave-assisted Concrete Processes

Summary

Microwave Heating Cavities and Applicators

The Main Components of Microwave Heating Systems

Microwave Applicators; Introduction and Design Basics

Applicators versus Probes

Far-Field versus Near-Field

Applicator Performance Parameters

Applicators used in Heating Systems

Summary

Über Autor(innen)

Dr Ong Khim Chye, Gary is an associate professor and deputy head (administration) in the department of civil and environmental engineering, NUS. He is an alumnus of the University of Singapore and the University of Dundee (UK). His research interests include advanced composite materials, microwave-assisted concrete technology, durability and assessment of concrete structures, retrofitting and sustainability in which he has edited/co-edited 13 conference proceedings and published more than 180 publications in journals, and conferences.

Dr. Ali Akbarnezhad is a lecturer in the school of civil and environmental engineering, the University of New South Wales. His main areas of research include concrete technology, design for sustainability, sustainability assessment, construction technology and information technology in which he has published more than 25 papers in leading refereed journals and conference proceedings. He is an alumnus of the Amirkabir University of Technology (Tehran) and National University of Singapore. Dr Akbarnezhad has been involved in microwave heating research and development for more than eight years.